<template>
  <a-layout>

    <a-layout-content
            :style="{ background: '#fff', padding: '24px', margin: 0, minHeight: '280px' }"
    >
      <p>
        <a-form layout="inline" :model="param">
          <a-form-item>
            <a-input v-model:value="param.name" placeholder="名称">
            </a-input>
          </a-form-item>
          <a-form-item>
            <a-button type="primary" @click="handleQuery({page: 1, size: pagination.pageSize})">
              查询
            </a-button>
          </a-form-item>
          <a-form-item>
            <a-button type="primary" @click="add()">
              新增
            </a-button>
          </a-form-item>
        </a-form>


      </p>

      <a-table
              :columns="columns"
              :row-key="record => record.id"
              :data-source="ebooks"
              :pagination="pagination"
              :loading="loading"
              @change="handleTableChange"
      >
        <template #cover="{ text: cover }">
          <img v-if="cover" :src="cover" alt="avatar" />
        </template>

        <template v-slot:category="{ text, record }">
          <span>{{ getCategoryName(record.category1Id) }} / {{ getCategoryName(record.category2Id) }}</span>
        </template>

        <template v-slot:action="{ text, record }">
          <a-space size="small">
            <router-link :to="'/admin/doc?ebookId=' + record.id">
              <a-button type="primary" >
                文档管理
              </a-button>
            </router-link>
            <a-button type="primary" @click="edit(record)">
              编辑
            </a-button>
            <a-popconfirm
                    title="删除后不可恢复，确认删除?"
                    ok-text="是"
                    cancel-text="否"
                    @confirm="handleDelete(record.id)"
            >
              <a-button type="danger" >
                删除
              </a-button>
            </a-popconfirm>
          </a-space>
        </template>
      </a-table>
    </a-layout-content>
  </a-layout>
  <a-modal
          title="电子书表单"
          v-model:visible="modalVisible"
          :confirm-loading="modalLoading"
          @ok="handleModalOk"
  >
    <a-form :model="ebook" :label-col="{ span: 6 }" :wrapper-col="{ span: 18 }">
      <a-form-item label="封面">
        <a-input v-model:value="ebook.cover" />
      </a-form-item>
      <a-form-item label="名称">
        <a-input v-model:value="ebook.name" />
      </a-form-item>
      <a-form-item label="分类">
        <a-cascader
                v-model:value="categoryIds"
                :field-names="{ label: 'name', value: 'id', children: 'children' }"
                :options="level1"
        />
      </a-form-item>
      <a-form-item label="描述">
        <a-input v-model:value="ebook.description" type="textarea" />
      </a-form-item>
    </a-form>


  </a-modal>
</template>
<script lang="ts">
  import {defineComponent, onMounted, ref} from 'vue';
  import axios from 'axios';
  import {message} from "ant-design-vue";
  import {Tool} from "@/util/tool";

  export default defineComponent({
    name: 'AdminEbook',
    setup() {
      const param = ref();
      param.value = {};
      const ebooks = ref();
      const pagination = ref({
        current: 1,
        pageSize: 10,
        total: 0
      });
      const loading = ref(false);

      const columns = [
        {
          title: '封面',
          dataIndex: 'cover',
          slots: { customRender: 'cover' }
        },
        {
          title: '名称',
          dataIndex: 'name'
        },
        {
          title: '分类',
          slots: { customRender: 'category' }
        }
        ,
        {
          title: '文档数',
          dataIndex: 'docCount'
        },
        {
          title: '阅读数',
          dataIndex: 'viewCount'
        },
        {
          title: '点赞数',
          dataIndex: 'voteCount'
        },
        {
          title: 'Action',
          key: 'action',
          slots: { customRender: 'action' }
        }
      ];

      /**
       * 数据查询
       **/
      const handleQuery = (params: any) => {
        loading.value = true;
        //如果不清空现有数据，则编辑保存重新加载数据后，再点编辑，则列表显示的还是编辑前的数据
        ebooks.value=[];
        axios.get("/ebook/list", {
          params: {
            page: params.page,
            size:params.size,
            name: param.value.name
          }
        }).then((response) => {
          loading.value = false;
          const data = response.data;
          if(data.success){
          ebooks.value = data.content.list;
          // 重置分页按钮
          pagination.value.current = params.page;
          pagination.value.total=data.content.total;
          }else {
            message.error(data.message);
          }
        });
      };

      /**
       * 表格点击页码时触发
       */
      const handleTableChange = (pagination: any) => {
        console.log("看看自带的分页参数都有啥：" + pagination);
        handleQuery({
          page: pagination.current,
          size: pagination.pageSize
        });
      };

      // -------- 表单 ---------
      const categoryIds=ref();
      const ebook=ref(); //ref({})--------里面的属性就失效了
      const modalVisible = ref(false);
      const modalLoading = ref(false);
      const handleModalOk = () => {
        modalLoading.value = true;
        ebook.value.category1Id = categoryIds.value[0];
        ebook.value.category2Id = categoryIds.value[1];
        axios.post("/ebook/save", ebook.value).then((response) => {
          modalLoading.value = false;

          const data = response.data;
          if(data.success){
            modalVisible.value = false;
            //重新加载列表
            handleQuery({
              page:pagination.value.current,
              size:pagination.value.pageSize,
            });

          }else {
            message.error(data.message)
          }
        });
      };

      /**
       * 编辑
       */
      const edit = (record:any) => {
        modalVisible.value = true;
        ebook.value=Tool.copy(record);
        categoryIds.value = [ebook.value.category1Id, ebook.value.category2Id]
      };

      /**
       * 新增
       */
      const add = () => {
        modalVisible.value = true;
        ebook.value={}
      };
      /**
       * 删除操作
       * @param id
       */
      const handleDelete = (id:number) => {
        axios.delete("/ebook/delete/"+id).then((response) => {

          const data = response.data;
          //重新加载列表
          handleQuery({
            page:pagination.value.current,
            size:pagination.value.pageSize,
          });

        });
      };

      const level1 =  ref();
      let categorys: any;
      /**
       * 查询所有分类
       **/
      const handleQueryCategory = () => {
        loading.value = true;
        axios.get("/category/all").then((response) => {
          loading.value = false;
          const data = response.data;
          if (data.success) {
            categorys = data.content;
            console.log("原始数组：", categorys);

            level1.value = [];
            level1.value = Tool.array2Tree(categorys, 0);
            console.log("树形结构：", level1.value);

            // 加载完分类后，再加载电子书，否则如果分类树加载很慢，则电子书渲染会报错
            handleQuery({
              page:1,
              size:pagination.value.pageSize});
          } else {
            message.error(data.message);
          }
        });
      };

      const getCategoryName = (cid: number) => {
        // console.log(cid)
        let result = "";
        categorys.forEach((item: any) => {
          if (item.id === cid) {
            // return item.name; // 注意，这里直接return不起作用
            result = item.name;
          }
        });
        return result;
      };


      onMounted(() => {
        handleQueryCategory();
      });

      return {
        param,
        ebooks,
        pagination,
        columns,
        loading,
        handleTableChange,
        handleQuery,
        getCategoryName,

        edit,
        add,

        ebook,
        modalVisible,
        modalLoading,
        handleModalOk,

        categoryIds,
        level1,
        handleDelete
      }
    }
  });
</script>

<style scoped>
  img {
    width: 50px;
    height: 50px;
  }
</style>